3D printing apparatus



FIG. 1 is a left elevational view of a 3D printing apparatus:

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof:

FIG. 4 is a top plan view thereof;

FIG. 5 is a right elevational view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a perspective view thereof;

FIG. 8 is an exploded left elevational view thereof;

FIG. 9 is an exploded perspective view thereof;

FIG. 10 is an exploded front elevational view thereof;

FIG. 11 is an exploded rear elevational view thereof; and,

FIG. 12 is an exploded right elevational view thereof.

The broken lines show portions of a 3D printing apparatus that forms no part of the claimed design. 

CLAIM The ornamental design for a 3D printing apparatus, as shown and described. 